package com.zhaoss.weixinrecorded.util;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.ImageFormat;
import android.graphics.Matrix;
import android.graphics.SurfaceTexture;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraCaptureSession;
import android.hardware.camera2.CameraCharacteristics;
import android.hardware.camera2.CameraDevice;
import android.hardware.camera2.CameraManager;
import android.hardware.camera2.CaptureRequest;
import android.hardware.camera2.params.StreamConfigurationMap;
import android.media.Image;
import android.media.ImageReader;
import android.os.Handler;
import android.os.HandlerThread;
import android.support.annotation.NonNull;
import android.util.Size;
import android.view.Surface;
import android.widget.ImageView;
import com.lansosdk.videoeditor.LanSongFileUtil;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Arrays;
/**
* Created by zhaoshuang on 2018/7/20.
*/
public class CameraHelp2 {
private Context mContext;
private int defaultSize = 1920 * 1080;
private CameraManager cameraManager;
private CameraDevice mCameraDevice;
private CaptureRequest.Builder previewRequestBuilder;
private SurfaceTexture surfaceTexture;
private Handler mHandler;
private int[] previewSize;
private CameraCaptureSession mCameraCaptureSession;
private ImageReader mImageReader;
private int mOrientation;
public CameraHelp2(Context context){
this.mContext = context;
HandlerThread handlerThread = new HandlerThread("CameraHelp2");
handlerThread.start();
mHandler = new Handler(handlerThread.getLooper());
cameraManager = (CameraManager) context.getSystemService(Context.CAMERA_SERVICE);
}
@SuppressLint("MissingPermission")
public void openCamera(SurfaceTexture surfaceTexture, final ImageView imageView) {
try {
this.surfaceTexture = surfaceTexture;
String[] ids = cameraManager.getCameraIdList();
String cameraId = "";
for (String id : ids) {
CameraCharacteristics characteristics = cameraManager.getCameraCharacteristics(id);
Integer cameraOrientation = characteristics.get(CameraCharacteristics.LENS_FACING);
Integer sensorOrientation = characteristics.get(CameraCharacteristics.SENSOR_ORIENTATION);
if(cameraOrientation == CameraCharacteristics.LENS_FACING_BACK){
cameraId = id;
mOrientation = sensorOrientation;
}
}
CameraCharacteristics characteristics = cameraManager.getCameraCharacteristics(cameraId);
StreamConfigurationMap map = characteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
previewSize = getPreviewSize(map);
mImageReader = ImageReader.newInstance(previewSize[0], previewSize[1], ImageFormat.JPEG, 1);
mImageReader.setOnImageAvailableListener(new ImageReader.OnImageAvailableListener() {
@Override
public void onImageAvailable(ImageReader reader) {
Image image = reader.acquireLatestImage();
ByteBuffer buffer = image.getPlanes()[0].getBuffer();
byte[] imgs = new byte[buffer.remaining()];
buffer.get(imgs);
try {
Bitmap bitmap = BitmapFactory.decodeByteArray(imgs, 0, imgs.length);
Matrix matrix = new Matrix();
matrix.setRotate(mOrientation);
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, false);
String photoPath = LanSongFileUtil.DEFAULT_DIR+System.currentTimeMillis()+".jpeg";
FileOutputStream fos = new FileOutputStream(photoPath);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
fos.close();
}catch (IOException e){
e.printStackTrace();
}
image.close();
}
}, mHandler);
cameraManager.openCamera(cameraId, new CameraDevice.StateCallback() {
@Override
public void onOpened(@NonNull CameraDevice camera) {
mCameraDevice = camera;
createCameraSession();
}
@Override
public void onDisconnected(@NonNull CameraDevice camera) {
camera.close();
mCameraDevice = null;
}
@Override
public void onError(@NonNull CameraDevice camera, int error) {
camera.close();
mCameraDevice = null;
}
}, mHandler);
} catch (Exception e) {
e.printStackTrace();
}
}
public void shotPhoto(){
try {
CaptureRequest.Builder captureRequestBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
captureRequestBuilder.addTarget(mImageReader.getSurface());
// 自动对焦
captureRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
// 自动曝光
captureRequestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
captureRequestBuilder.set(CaptureRequest.JPEG_ORIENTATION, mOrientation);
CaptureRequest captureRequest = captureRequestBuilder.build();
mCameraCaptureSession.capture(captureRequest, null, mHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
public void openFlash(){
try {
previewRequestBuilder.set(CaptureRequest.FLASH_MODE, CaptureRequest.FLASH_MODE_TORCH);
CaptureRequest previewRequest = previewRequestBuilder.build();
mCameraCaptureSession.setRepeatingRequest(previewRequest, null, mHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
public void closeFlash(){
try {
previewRequestBuilder.set(CaptureRequest.FLASH_MODE, CaptureRequest.FLASH_MODE_OFF);
CaptureRequest previewRequest = previewRequestBuilder.build();
mCameraCaptureSession.setRepeatingRequest(previewRequest, null, mHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
private void createCameraSession() {
try {
previewRequestBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
Surface previewSurface = new Surface(surfaceTexture);
previewRequestBuilder.addTarget(previewSurface);
mCameraDevice.createCaptureSession(Arrays.asList(previewSurface, mImageReader.getSurface()), new CameraCaptureSession.StateCallback() {
@Override
public void onConfigured(@NonNull CameraCaptureSession cameraCaptureSession) {
try {
mCameraCaptureSession = cameraCaptureSession;
previewRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
CaptureRequest previewRequest = previewRequestBuilder.build();
cameraCaptureSession.setRepeatingRequest(previewRequest, null, mHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
@Override
public void onConfigureFailed(@NonNull CameraCaptureSession session) {
}
}, mHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
//摄像大小
private int[] getPreviewSize(StreamConfigurationMap map){
Size[] sizes = map.getOutputSizes(ImageFormat.JPEG);
int[] previewSize = new int[2];
boolean flag = false;
for (Size size : sizes) {
if (size.getWidth() * size.getHeight() == defaultSize) {
previewSize[0] = size.getWidth();
previewSize[1] = size.getHeight();
flag = true;
}
}
if (!flag) {
int difference = 0;
int position = 0;
for (int x=0; x<sizes.length; x++) {
Size size = sizes[x];
int n = Math.abs(defaultSize - size.getWidth() * size.getHeight());
if (x == 0 || difference > n) {
difference = n;
position = x;
}
}
previewSize[0] = sizes[position].getWidth();
previewSize[1] = sizes[position].getHeight();
}
return previewSize;
}
private byte[] getYUVI420(Image image){
int width = image.getWidth();
int height = image.getHeight();
byte[] yuvI420 = new byte[image.getWidth()*image.getHeight()*3/2];
byte[] yData = new byte[image.getPlanes()[0].getBuffer().remaining()];
byte[] uData = new byte[image.getPlanes()[1].getBuffer().remaining()];
byte[] vData = new byte[image.getPlanes()[2].getBuffer().remaining()];
image.getPlanes()[0].getBuffer().get(yData);
image.getPlanes()[1].getBuffer().get(uData);
image.getPlanes()[2].getBuffer().get(vData);
System.arraycopy(yData, 0, yuvI420, 0, yData.length);
int index = yData.length;
for (int r = 0; r < height / 2; ++r) {
for (int c = 0; c < width; c += 2) { //各一个byte存一个U值和V值
yuvI420[index++] = uData[r * width + c];
}
}
for (int r = 0; r < height / 2; ++r) {
for (int c = 0; c < width; c += 2) { //各一个byte存一个U值和V值
yuvI420[index++] = vData[r * width + c];
}
}
return yuvI420;
}
}
